Essay on Diversity and Distribution of Eucalyptus

The Burnt Area of Mount Pilot contains mixed stands of competing, seedlings with slower growing Callitris seedlings and re-sprouting Eucalyptus trees. There is few Callitris endlicheri, as the species is fire sensitive and often destroyed by fire, particularly when in quick succession. Prior to the 2003 fire the site was dominated by Callitris species of tree. The seedlings that emerged were mostly Eucalyptus, with less dense Callitris seedlings proving that the growth of Callitris is not consistent with long term site suitability. Surprisingly, more Eucalyptus seedlings died in the first six years of regeneration that Callitris seedlings; competition in co-existence does not determine survivability. The major trend is that the growth of Eucalyptus seedlings is faster than that of Callitris seedlings. The density of Eucalyptus seedlings is shown to effect Callitris seedlings growth which thrives where Eucalyptus seedlings are sparser. Callitris may take 7-15 years to produce sufficient seeds (Cohn, Lunt, Ross, & Bradstock, 2011; I. Lunt, Jones, N., & Petrow, M.,, 2003; I. Lunt, Price, J.,, 2016; Ian D Lunt, Zimmer, & Cheal, 2011; Zimmer, 2012).

The leaves of the eucalyptus tree contain toxic chemical compounds. As a result only few animals are able to consume the leaves, therefore giving the tree a better chance of survival.

These areas are called the Coastal, Lowland, Temperate rain forest, Montane, Subalpine, and Alpine. The most common trees and plant in the Coastal Forest is the Sitka spruce (Picea sitchensis), Salal (Gaultheria shallon), and the Deer fern (Blechnum spicant). Second, the Lowlands common species are Douglas-fir (Pseudotsuga menziesii), Coast Red Elderberry (Sambucus racemosa), and Bleeding Heart (Dicentra formosa). Third, the Temperate Rain Forest most common trees and plants are Sitka Spruce (Picea sitchensis), Salmonberry (Rubus spectabilis), Licorice fern (Polypodium glycyrrhiza), and Oregon Oxalis (Oxalis oregana). Fourth, the Montane Forest includes the Alaska Yellow-Cedar (Chaemaecyparis nootkatensis), Salal (Gaultheria shallon), and Coralroot (Corallorhiza mertensiana). Fifth, the Subalpine Forest trees and plants are the Mountain Hemlock (Tsuga mertensiana), Blueberries (Vaccinium sp.), and Avalanche Lily (Erythronium montanum). And lastly the Alpine Forest includes only a few common species the Golden Eagle (Aquila chrysaetos), and Flett’s violet (Viola flettii). The variety of tree and plant seem to change with

Eucalyptus Camaldulensis (see image 6), commonly known as River red gums is one of the 800 species of the genus Eucalyptus. River red gums are the most populous of the eucalyptus genus (see image 8) commonly found near the Murrumbidgee River and the Darling River.

To see the differences of the two sites, basal area, density, species richness, and the Shannon diversity index were used. Basal area and density is the average amount of space of trees in hectares. Basal area is taken using the tree diameters while density uses the number of trees. Species richness is the number of species found. Abundance of each species is used to find the Shannon diversity index. The Sorensen similarity index compares the areas based on the number of the same species. Also, different species were looked at to find the relative basal area, relative density, and importance value of the trees. There were differences and similarities in both

Deforestation in Australia What is the issue? Australia is among one of the wealthiest nations. It has a small population of almost 24million but has a high rate of extensive deforestation and degradation since the later 18th century during European settlement. Most of Australia, around 7.6million

The Wollemi Pine is a unique,, cone-bearing tree that grows to 40m in height it also has a very long life time. This species is often multi-stemmed and have a diameter of up to 1.2 m at breast height Bark is thin, it is fragile and densely covered with dark brown spongy, slightly cushioned tubercles, which looks similar to black Branches are arranged in continuous whorls which extend from the main stem. The side branches terminate in a cone. Wollemi Pine is most commonly located in western Sydney at the Wollemi National Park (NP) with a population of fewer than 100 adult trees in multiple stands and about 200–300 seedlings in total from within the Wollemi National Park, it Is considered an endangered species.

The term mangrove doesn’t refer to a single plant species, but to a variety of them that share a similarity to one another. There are 54 recognized species that belong to 16 different families. A mangrove is considered to be woody trees or shrubs that flourish in mangals (Hogarth 1999). A mangal is referred to as an environment such as intertidal zones, muddy areas at river mouths, and other areas usually inundated (covered) with water. Silt deposits in these areas make it a suitable environment. Mangroves are considered to inhabit a harsh environment compared to other plants. Their roots are located in salty, waterlogged, and oxygen lacking soils. These areas are influenced by tidal action, so the water levels are fluctuating between high and low tides constantly (Talbot, Steene 1990). The mangroves are the most widely distributed environments in Australia. They are mostly tropical but have been found to survive in air temperatures as low as 5 degrees Celsius. Mangrove distribution is most closely correlated with sea temperature than air temperature (Hogarth 1999). Mangroves range from the Gascoyne River and Banbury in Western Australia, across the whole northern coast, down the east coast to

The first stop was 25 years of age, with the white ash as a dominant species. This stand had a well-developed understory, with many young seedlings and saplings. Stop number 2 was 75 years old and was dominant with sugar maple. This stop had less undergrowth than stop 1 and had older, more mature trees. Finally, stop 3 was 75-125 years of age and was also dominant in sugar maple. This stop had the least amount of understory compared to the other stops. It had the oldest trees, which were even-aged. In order to compare the stands, the stems per acre, total basal area, average diameter at breast height (DBH) and relative stand density were observed for each stand.

2. The Eucalyptus tree affects many species of animals in both positive and negative ways. They are the main diet for koalas, provide shade for wild animals in Australia, many species of birds make nest in them, humans use their oil for medicine and fires, and acts as a wind breaker for smaller plants. their negative effects are mainly towards other plants because they consume most of the water in the soil. They are also relatively fast growers so they are able to grow taller then other plants, which then blocks the sunlight form reaching the smaller plants. It is very dangerous for eucalyptus to be around fires because their oil will make them combust, allowing for the spread of seeds and for the smaller eucalyptus

Acacia species are typically abundant in Australia, where bushfires are a regular occurrence in summer. The viability of Acacia in this area has been recognised as an outcome of the stimulatory impact of fire on Acacia seed germination (Bell et al., 1993).

Our results show that the dry weight and specific leaf weight are different for each sub species supporting the hypothesis that the subs species each adapted in their own way. Our results also showed that the surface area between the subspecies were very close in values which could reject our null hypothesis. You can tell by looking at the leaves that they each have their own shape which could be a sign of different adaptations. We could not test in the lab thought special adaptations such as how well the leaves are at preventing evapotranspiration. Our results on what we did test are not highly reliable.

There are six different types of biomes on earth. The rainforest is one of these six on earth and it has district,different characteristics that the others. Today I will be talking about their characteristics,a little bit about the animals that live there,food web,where they are located, and my conclusion of what I learned.

This kind of tree grows very tall. The bark sheds, making the trees look white.

Acacia mearnsii, commonly known as the black wattle, is one of the most widely distributed tree species in the world. Black wattle is classified as a legume tree species, a group of trees that are capable of nitrogen fixation. Acacia mearnsii can be in the form of a large shrub or tree that grow from five to twenty five meters tall, with a trunk diameter of up to fifty centimeters. The species is native to southeastern Australia. The shrub has been introduced to Africa, North America, and Asia because it can be used for wood fuel, tannin, food sources, and crops. The plant disperses its seeds via surface runoff, where rainwater flows on land. The plant germinates through bushfires.